Water Quality (Grade 11 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does good water quality mean?
What does good water quality mean?
Water free from harmful bacteria & pollutants
What causes eutrophication in water bodies?
What causes eutrophication in water bodies?
Excessive nutrients from fertilisers & sewage
What happens when algae in an algal bloom die and decompose?
What happens when algae in an algal bloom die and decompose?
Bacteria use up oxygen killing aquatic life
Which substances are found in agricultural runoff?
Which substances are found in agricultural runoff?
Nitrates, phosphates, and pesticides
What colour is water affected by acid mine drainage (AMD)?
What colour is water affected by acid mine drainage (AMD)?
Orange-coloured
Why does thermal pollution reduce oxygen levels in water?
Why does thermal pollution reduce oxygen levels in water?
Warm water holds less dissolved oxygen
How quickly can water hyacinth double its population under ideal conditions?
How quickly can water hyacinth double its population under ideal conditions?
12 days
Which heavy metals are found in industrial effluent?
Which heavy metals are found in industrial effluent?
Mercury and lead
What is the finest layer at the bottom of a homemade water filter?
What is the finest layer at the bottom of a homemade water filter?
Cloth
Which process kills disease-causing microorganisms in municipal water treatment?
Which process kills disease-causing microorganisms in municipal water treatment?
Disinfection